package com.example.sam.recyclerviewtest;

import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

import java.util.List;

/**
 * Created by BOT-CC on 2017/4/13.
 */

public class MyAdapter extends RecyclerView.Adapter{
    private Context context;
    private LayoutInflater layoutInflater;//动态加载布局
    private List<ArticleBean> list;//保存要显示的数据
    //1.自定义：构造方法，传递上下文
    public MyAdapter(Context context) {
        this.context = context;
        layoutInflater = LayoutInflater.from(context);
    }
    //2.自定义，获取数据
    public void setList(List<ArticleBean> list){
        this.list = list;
    }
    //3.自定义，ViewHolder子类
    public class ViewHolder extends RecyclerView.ViewHolder{
        private ImageView imageView;
        private TextView tvtitle,tvdescrrpt,tvtime;
        private Button button;
        public ViewHolder(View itemView) {
            super(itemView);
            imageView = (ImageView)itemView.findViewById(R.id.imageView);
            tvtitle = (TextView)itemView.findViewById(R.id.textView);
            tvdescrrpt = (TextView)itemView.findViewById(R.id.textView2);
            tvtime = (TextView)itemView.findViewById(R.id.textView3);
            button = (Button) itemView.findViewById(R.id.button);
        }
    }
    //4.重写，生成item的View
    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View v = layoutInflater.inflate(R.layout.item,parent,false);
        return new ViewHolder(v);
    }
    //5.重写,给ViewHolder中的控件填充值，设置监听
    @Override
    public void onBindViewHolder(RecyclerView.ViewHolder holder, final int position) {
        ArticleBean articleBean = list.get(position);
        if(articleBean == null) return;
            ViewHolder viewHolder = (ViewHolder) holder;
            viewHolder.imageView.setImageResource(articleBean.getImgid());
            viewHolder.tvtitle.setText(articleBean.getTitle());
            viewHolder.tvdescrrpt.setText(articleBean.getDescription());
            viewHolder.tvtime.setText(articleBean.getTime());
            viewHolder.button.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    list.remove(position);
                    notifyDataSetChanged();//更新RecyclerView
                    //在实际案例中，要删除应该会涉及到网络或数据库访问
                    //一般要有删除前的提示
                }
            });
        viewHolder.itemView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                //获取当前条目信息，如id
                int id = list.get(position).getArticleId();
                Toast.makeText(context, id, Toast.LENGTH_SHORT).show();
                //实际中，点击后打开新窗口做其他操作
            }
        });
    }

    @Override
    public int getItemCount() {
        return list.size();
    }
}
